title: Comparison between FEBio and Abaqus for biphasic contact problems.
abstract: Articular cartilage plays an important role in the function of diarthrodial joints. Computational methods have been used to study the biphasic mechanics of cartilage, and Abaqus has been one of the most widely used commercial software packages for this purpose. A newly developed open-source finite element solver, FEBio, has been developed specifically for biomechanical applications. The aim of this study was to undertake a direct comparison between FEBio and Abaqus for some practical contact problems involving cartilage. Three model types, representing a porous flat-ended indentation test, a spherical-ended indentation test, and a conceptual natural joint contact model, were compared. In addition, a parameter sensitivity study was also performed for the spherical-ended indentation test to investigate the effects of changes in the input material properties on the model outputs, using both FEBio and Abaqus. Excellent agreement was found between FEBio and Abaqus for all of the model types and across the range of material properties that were investigated.
authors.affiliation: Institute of Medical and Biological Engineering, School of Mechanical Engineering, University of Leeds, Leeds, UK. Q.Meng@leeds.ac.uk
authors.forename: Qingen
authors.initials: Q
authors.lastname: Meng
authors.forename: Zhongmin
authors.initials: Z
authors.lastname: Jin
authors.forename: John
authors.initials: J
authors.lastname: Fisher
authors.forename: Ruth
authors.initials: R
authors.lastname: Wilcox
mesh_terms: D000465:Algorithms; D002358:Cartilage, Articular / Q000502:physiology*; D003198:Computer Simulation; D055119:Elastic Modulus / Q000502:physiology; D020342:Finite Element Analysis; D006801:Humans; D008954:Models, Biological; D011381:Programming Languages; D012986:Software Validation; D013314:Stress, Mechanical; D013718:Tensile Strength / Q000502:physiology
keywords: Abaqus; Articular cartilage; FEBio; biphasic model; finite element